Bidwell mystery - Sidney, NY

On the 1880 census for Sidney, Delaware Co. NY there is a listing for Simeon Bidwell age 81 with wife Laura age 59.Simeon's first wife Clarisa Ayers died Dec. 8, 1875 age 66, and is buried in St. Matthew's Church yard, Unadilla, Otsego Co. NY. Some Bidwell researchers have Clarisa's middle name as Laura, but Clarisa was age 66 when she died in 1875, so she could not be the same "Laura" as on the 1880 census.I would like any information on Simeon's second wife Laura.When did they get married and what was her surname at the time of their marriage?Simeon Bidwell's death certificate dated 1888 does not list a wife, so I assume Laura died before 1888.Any help with this mystery would be greatly appreciated.